Feeding apparatus for mechanical stokers.



E. D. NEWKIRK. FEEDING APPARATUS FOR MECHANICAL STOKERS.

APPLIOATION FILED MAY '1, 1906.

Patented Apr. 4, 1911.

2 SHEETS-SHEET 1.

WITNESSES.-

A T'I'ORNEY.

" E. D. NEWKIRK.

' FEEDING APPARATUS FOR MECHANICAL STOKERS.

APPLIOATION FILED MAY 7, 1906 Patented Apr. 4, 1911.

2 SHEETS-SHEET 2.

WITNESSES:

INVENTOR. Kai e1 1 ATTORNbY.

UNITED STATES PATENT OFFICE.

EDGAR D. NEWKIRK, OF CANAS'IO TA, NEW YORK, ASSIGNOR TO THE WESTINGHOUSEMACHINE COMPANY, A CORPORATION OF PENNSYLVANIA.

FEEDING- APPARATUS FOR MECHANICAL STOKEBS.

Specification of Letters Patent.

Application filed May 7, 1906. Serial N 0. 315,641.

Patented Apr. 4, 1911.

To all whom it may concern:

Be it known that I, EDGAR D. Nnwxmx, a citizen of the United States, anda resident of Canastota, in the county of Madison and State of New York,have made a new and useful Invention in Feeding Apparatus for MechanicalStokers, of which the following is a specification.

This invention relates to mechanical stokers and more particularly tofuel-feeding apparatus for such stokers.

The object of thisinvention is the production of improved means, inconnection with the fuel-feeding apparatus of a mechanical stoker, fordelivering the fuel uniformly over the entire width of the furnacegrates. This and other objects I attain in a stoker embodying thefeatures herein described and illustrated in the drawings accompanyingthis application and forming a part thereof.

Figure 1 is a partial plan view of a stoker embodying my invention; Fig.2 is a section along the line AA of Fig. 1; Fig. 3 is a plan view of adetail embodied in my invention; Fig. 4 is an end view of a detail shownin Fig. 3; and, Fig. 5 is a side elevation of the detail shown in Figs.3 and 4.

The fuel-feeding device, as illustrated, is suitably attached to thefront portion 6 of a furnace and comprises a fuel hopper 7, areciprocating pusher 8 for feeding the fuel from the hopper into thefurnace and a dead-plate 9, over which the fuel passes in entering thefurnace. The fuel is delivered by the dead-plate onto reciprocatinggrate bars 10, which are arranged in stepped relation and extendtransversely of the furnace.

The grate bars are mounted on side bearers (not shown), which aresupported at one end on the hearth portion and at the other on the frontportion 6 of the furnace.

Sight doors or o enings 11, arranged in the front portion'o the furnace,are located at either side of the fuel-feeding device and are utilizedin ascertaining the condition of the fuel bed, which is supported by thegrate bars 10. The fuel hopper 7, because of the sightdoors, isnecessarily not as long as the grate bars 10 and consequently in orderthat each grate bar shall be effective throughout its entire length as afueLcarrying agent, means are utilized for spreading the charge of fueldelivered from the hopper 7 so that it will be equally distributedthroughout the length of the receiving rate bar.

The dead-plate 9, WhlCh, for the sake of convenience, is east in anumber of parts, consists of a horizontal portion 12 which cooperateswith the front portion of the furnace to form a discharging throat forthe fuel hopper 7, and an 1nclincd portion 13, which extends into thefurnace and over which the fuel is delivered to the grate bars. Theinclined portion is provided with diverging corrugations 14 so arrangedthat the fuel discharged from the fuel hopper 7 will be equallydistributed and spread over the entire length of the grate bars 10.

In accordance with the provisions of the patent statutes, I havedescribed the principle of operation of my invention, together with theapparatus which I now consider to represent the best embodiment thereof;but I desire to have it understood that the apparatus shown is onlyillustrative and may be utilized in connection with any stoker employinga hopper that is narrower than the furnace width; and

What I claim is:

1. In combination in a mechanical stoker, a fuel hopper, a reciprocatorypusher and a corrugated dead plate, the corrugations of which divergeand extend in the direction of the flow of the fuel passing over saidplate.

2. In combination in a mechanical stoker, a fuel hopper, a reciprocatorypusher and a dead plate provided with corrugations in the direction ofthe flow of the fuel passing over said plate.

3. In combination in a mechanical stoker, a fuel hopper, a reciprocatorypusher and a dead plate comprising a horizontal portion and an inclinedcorrugated portion, the corrugations being in the direction of the flowof the fuel passing over said plate.

4. In combination in a mechanical stoker, a fuel hopper, a reciprocatorypusher and a dead plate comprisin a horizontal portion and an inclinedportlon provided with divergent corrugations, the corrugations being Intestimony whereof, I have hereunto in the direction of the path of thefuel pass subscribed my name this 27th day of April, 10 ing over saidplate. 1906. I

5. In a mechanical Stoker a stationary 5 dead plate having divergentcbrrugations in 1 N K f the direction of the fuel passing over saidWitnesses:

plate and means for feeding fuel on to said DAVID WILLIAMS,

plate. E. VV-MCOALLISTER.

